Understanding Network Ports and Protocols

Which port number is used by the HTTP protocol?

• 21

• 80

• 110

• 443

What is the primary function of port 25 in TCP/IP networking?

• File Transfer Protocol (FTP)

• Simple Mail Transfer Protocol (SMTP)

• Hypertext Transfer Protocol (HTTP)

• Domain Name System (DNS)

Which protocol uses port 443 by default?

• FTP

• HTTP

• HTTPS

• POP3

Port 53 is associated with which of the following services?

• DNS

• Telnet

• SSH

• IMAP

Which port is commonly used for Secure Shell (SSH) connections?

• 22

• 23

• 25

• 110

A user wants to retrieve emails from a mail server using POP3. Which port should be configured?

• 25

• 110

• 143

• 443

If a network administrator wants to allow remote desktop access, which port should be opened on the firewall?

• 3389

• 80

• 53

• 21

A company wants to secure their web traffic. Which protocol and port combination should they use?

• HTTP, port 80

• HTTPS, port 443

• FTP, port 21

• Telnet, port 23

Which port number is used by the IMAP protocol for retrieving emails?

• 25

• 110

• 143

• 53

A network technician needs to configure a server to accept FTP connections. Which port should be enabled?

• 21

• 22

• 23

• 25